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| pizlo |
 Posted: 03/27/2008 8:36 AM Post subject: |
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Colonel
Joined: 22 Dec 2006
Posts: 659
951.19 Spud Bux
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| Gippeto wrote: | Sick is good?  It will look similar to a bullpup assault rifle when done.
Not only could I take it to 6000psi, I did...for proving (see the pic with the gage). Designed operating pressure is 3000psi. All parts exposed to pressure have a minimum rating of 9000psi. (calculated using yield strength of the material)
"Where do you work?? "
Only the shadow knows!  |
yes, sick is quite good. And in the last sentence are you referencing the 1920s radio show about "the shadow"? |
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| jackssmirkingrevenge |
| Posted: 03/27/2008 9:17 AM Post subject: |
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space monkey
Joined: 15 Mar 2007
Posts: 7050
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| Gippeto wrote: | | Accuracy will be the issue not power. A mold for foster slugs will have to be made. |
Hence the "50 yard" specification 
Shame you couldn't have made it closer to 0.72" calibre, that would have made all ammunition made for smoothbore shotguns avaialbe as a ready-made option for ammo - though I suppose a few layers of duct tape wrapped around the said projectiles would still make them good enough for you. |
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| Gippeto |
| Posted: 03/27/2008 12:33 PM Post subject: |
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Colonel
Joined: 19 Jan 2008
Posts: 705
1746.17 Spud Bux
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Pizlo, Yes. It seemed funny at the time.
JSR, I know Lyman makes a 12ga slug mold for sabot slugs, I'll check to see if they make a foster slug mold. (I cannot see why they would not)
I did some quick searching and turned up that 10 gauge shotguns have a nominal bore size of .770". 10ga foster slug mold? I'll have to look. |
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| RDX, |
| Posted: 03/27/2008 13:27 PM Post subject: |
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Corporal
Joined: 31 Mar 2007
Posts: 74
160.71 Spud Bux
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how are you going to trigger the hammer ?
if you have any plans for trigger system, I would like to get some plans from you for my hammer valve rifle  |
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| Gippeto |
| Posted: 03/28/2008 0:06 AM Post subject: |
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Colonel
Joined: 19 Jan 2008
Posts: 705
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The hammer will be triggered with a fairly conventional sear arrangement. There will be a linkage running past the pilot vent and check valve to the trigger. I have not yet decided whether the linkage will be double or single sided, but I am leaning toward double sided. (like a ladder)
I don't have printed plans, but it's just a trigger and sear, there are many ways to set it up.
It really depends on where your trigger and sear are in relation to each other, and the types of adjustment you wish to incorporate. |
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| jackssmirkingrevenge |
| Posted: 03/28/2008 0:20 AM Post subject: |
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space monkey
Joined: 15 Mar 2007
Posts: 7050
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| Gippeto wrote: | | I did some quick searching and turned up that 10 gauge shotguns have a nominal bore size of .770". 10ga foster slug mold? I'll have to look. |
They certainly exist, that's over 750 grains worth of lead, and more weight equals lower velocity but better efficiency so the foot pounds would go up.
Beware the recoil though |
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| Gippeto |
| Posted: 03/28/2008 1:05 AM Post subject: |
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Colonel
Joined: 19 Jan 2008
Posts: 705
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| FordGtMan |
| Posted: 04/16/2008 21:23 PM Post subject: |
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1st Lieutenant
Joined: 25 Oct 2007
Posts: 289
276.38 Spud Bux
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If this is kicking a topic, sorry, but have you made any progress on the check valve that your redoing? This is going to be my favorite cannon ever when finished . Just love that coax look  |
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| Gippeto |
| Posted: 04/16/2008 23:20 PM Post subject: |
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Colonel
Joined: 19 Jan 2008
Posts: 705
1746.17 Spud Bux
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You bet. The check valve and probe style fill are done. (pic is at the top of the thread)
I have finished mocking up the sear, and have the carbon steel piece layed out and ready to cut. Should have the sear ready for heat treat by the weekend.
By mock up, I mean I welded small pieces together to develope the shape, then I transferred this shape to a piece of carbon steel. This will give me a part which is all one piece.
The mount for the sear is at the approximate same stage. |
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| Gippeto |
| Posted: 04/26/2008 15:03 PM Post subject: |
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Colonel
Joined: 19 Jan 2008
Posts: 705
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I'm going to bump my own thread, sorry if I offend anyone.
I finished the sear to a point where it is workable this morning.
Being curious, I assembled the co-ax "fully" for the first time, with a schrader in place of the check valve (easier right now) for a function check.
Charged to 120psi, it "spoke" to me for the first time.
Works beautifully! This is going to be a beast! 
Will try and get a vid today.
Edit: Vid is up on first post.
Last edited by Gippeto on 04/26/2008 15:43 PM; edited 1 time in total |
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| SpudFarm |
| Posted: 04/26/2008 15:05 PM Post subject: |
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Hybrid Guy
Joined: 04 Nov 2006
Posts: 2097
1187.34 Spud Bux
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| i hope you get a high pressure vid also:P |
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| Velocity |
| Posted: 04/26/2008 15:12 PM Post subject: |
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Brigadier General
Joined: 07 Feb 2006
Posts: 1011
83.82 Spud Bux
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I tried searching a bit, but I couldn't find anything that would help me out. Could you explain exactly how a hammer valve functions? Thanks.
Nice cannon by the way! |
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| Gippeto |
| Posted: 04/26/2008 18:03 PM Post subject: |
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Colonel
Joined: 19 Jan 2008
Posts: 705
1746.17 Spud Bux
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Thanks.
If you're interested in hammer valves, Ant has some simple but very effective designs in the bbmg/strafer showcase area.
http://www.spudfiles.com/forums/bbmg-strafer-showcase-f10.html
These would be a good place to start. He has animations/drawings of them, which will make it easier to understand.
If after studying Ant's stuff, you still have questions, I'll be happy to help however I can. |
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| Mitchza89 |
| Posted: 04/27/2008 7:46 AM Post subject: |
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Brigadier General
Joined: 08 Jan 2007
Posts: 858
1765.46 Spud Bux
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| God god mate. You're turning out to be one of the more skilled spudders on this site. I love everything you've put out so far. Keep them coming and I'll be sure to keep my eyes peeled on this post . |
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| trae08 |
| Posted: 04/27/2008 8:49 AM Post subject: |
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Donating Member
Joined: 09 Jul 2006
Posts: 496
422.74 Spud Bux
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just curious how do you get to 6000 psi?
and that is one of the most amazing coaxials i have seen. |
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